Synthesis and Antifungal Activity of 5-[2-(Alkylamino)pyrimidin-4-yl]-4-phenylthiazol-2-cycloalkylamine Derivatives on Phytophthora capsici

2011 ◽  
Vol 54 (3) ◽  
pp. 395-402 ◽  
Author(s):  
Seok-Woo Nam
Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 888
Author(s):  
Nguyen Thi Thanh Hai ◽  
Nguyen Duc Cuong ◽  
Nguyen Tran Quyen ◽  
Nguyen Quoc Hien ◽  
Tran Thi Dieu Hien ◽  
...  

Cu nanoparticles are a potential material for creating novel alternative antimicrobial products due to their unique antibacterial/antifungal properties, stability, dispersion, low cost and abundance as well as being economical and ecofriendly. In this work, carboxymethyl cellulose coated core/shell SiO2@Cu nanoparticles (NPs) were synthesized by a simple and effective chemical reduction process. The initial SiO2 NPs, which were prepared from rice husk ash, were coated by a copper ultrathin film using hydrazine and carboxymethyl cellulose (CMC) as reducing agent and stable agent, respectively. The core/shell SiO2@Cu nanoparticles with an average size of ~19 nm were surrounded by CMC. The results indicated that the SiO2@Cu@CMC suspension was a homogenous morphology with a spherical shape, regular dispersion and good stability. Furthermore, the multicomponent SiO2@Cu@CMC NPs showed good antifungal activity against Phytophthora capsici (P. capsici). The novel Cu NPs-based multicomponent suspension is a key compound in the development of new fungicides for the control of the Phytophthora disease.


2019 ◽  
Vol 56 (6) ◽  
pp. 522-528 ◽  
Author(s):  
Van Thu Le ◽  
Long Giang Bach ◽  
The Trinh Pham ◽  
Ngoc Thuy Trang Le ◽  
Uyen Thi Phan Ngoc ◽  
...  

2013 ◽  
Vol 41 (2) ◽  
pp. 112-117 ◽  
Author(s):  
Gun-Joo Lee ◽  
Joon-Hee Han ◽  
Jong-Hwan Shin ◽  
Heung Tae Kim ◽  
Kyoung Su Kim

2019 ◽  
Vol 22 (11-12) ◽  
pp. 786-793 ◽  
Author(s):  
Ngoc-Diep Pham ◽  
Minh-Man Duong ◽  
Minh-Vien Le ◽  
Hoang Anh Hoang ◽  
Le-Kieu-Oanh Pham

2019 ◽  
Vol 18 (06) ◽  
pp. 38-48
Author(s):  
Biet V. Huynh

Phenolic compounds are secondary metabolites mainly responsible for different pharmacological activities of the plant extracts. In this study, microwave-assisted extraction (MAE) variables were optimized for the extraction of the phenolic compounds from Chromolaena odorata (C. odorata) by using a central composite design (CCD) of response surface methodology (RSM). The optimized conditions were at 62oC for 3 min with solvent to feed ratio of 14:1 (mL/g) and ethanol concentration of 50% (v/v). The highest yield of total phenolic compounds was 75.76 mgGAE/g. Ethanol extract clearly showed antifungal activity through antifungal index. The antifungal effect Phytophthora capsici, Fusarium oxysporum and Colletotrichum siamese were 79.07%, 78.66% and 78.42%, in 0.5% of ethanol extract, respectively


2002 ◽  
Vol 48 (5) ◽  
pp. 407-417 ◽  
Author(s):  
Jung Yeop Lee ◽  
Byung Kook Hwang

Diversity of actinomycetes and their antifungal activities against some plant pathogenic fungi were examined in various vegetative soils from 14 different sites in the western part of Korea. Actinomycete counts ranged from 1.17 × 106to 4.20 × 106cfu·g-1dried soil. A total of 1510 actinomycetes were isolated from the soil samples. Streptomyces was predominant in soils with a pH range of 5.1-6.5, 9.1-13.0% moisture, and 9.1-11.0% organic matter. Most Micromonospora, Dactylosporangium, and Streptosporangium were distributed in soils with pH 4.0-5.0, 2.0-9.0% moisture, and 4.0-7.0% organic matter. Actinomadura and nocardioform actinomycetes were abundant in soils with pH 4.0-5.0 and 13.1-20.0% moisture and with 9.1-11.0 and 4.0-7.0% organic matter, respectively. Populations of Streptomyces were predominant in all the soils, but were highest in grassland and lowest in mountain-forest soils. Micromonospora was most abundant in pepper-field soil and nocardioform actinomycetes were highest in rice paddy field soil. Dactylosporangium was predominant in lake-mud sediments and pepper-field soil, Streptosporangium in lake-mud sediments, and Actinomadura in mountain-forest soil. Antifungal actinomycetes were abundant in orchard soil and lake mud. More than 50% of antifungal isolates from most soils were classified as genus Streptomyces. Actinomycete isolates that showed strong antifungal activity against Alternaria mali, Colletotrichum gloeosporioides, Fusarium oxysporum f.sp. cucumerinum, and Rhizoctonia solani were predominant in pepper-field soils, whereas those against Magnaporthe grisea and Phytophthora capsici were abundant in radish-field soils.Key words: actinomycetes, antifungal activity, plant pathogenic fungi, vegetative soils.


2019 ◽  
Vol 159 ◽  
pp. 59-67 ◽  
Author(s):  
Bi Wang ◽  
Fei Liu ◽  
Qi Li ◽  
Shu Xu ◽  
Xingzeng Zhao ◽  
...  

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